The main goal of this plugin is to to have a simple, standard way for teams to manage who is on the team. Since trac.admin provides too many places to setup one user, this plugin tries to provide one single page where a project admin can setup all things related to one user.

Note: This plugin is the next step of TeamRosterPlugin. So, in order to use UserManagerPlugin, please disable TeamRosterPlugin, in case you have it enabled.
UserManagerPlugin is compatible ~90% with data managed by TeamRosterPlugin, so switching from TeamRosterPlugin to UserManagerPlugin is safe (no data loss).